Sampled Property - HeadingPitchRoll


I’m trying to create a sampled property of type HeadingPitchRoll.

When I try:

var viewer = new Cesium.Viewer(‘cesiumContainer’);

function storeHeading() {

var hdg = new Cesium.SampledProperty(Cesium.HeadingPitchRoll);

                    // var hdg = new Cesium.SampledProperty(Cesium.HeadingPitchRoll.fromDegrees);  // Other attempt

//Populate it with data

hdg.addSample(Cesium.JulianDate.fromIso8601(‘2012-08-04T10:00:02Z’), Cesium.HeadingPitchRoll.fromDegrees(88.3, 0, 0));

return hdg;


var h = storeHeading();


I get the error: “Uncaught TypeError: innerType.pack is not a function (on line 562 of”

Please would it be possible to tell me where I am going wrong?

Without being rude, after quite a bit of Googling and it does seem that a simple function to put a model in the air at a position and at a heading / roll / pitch would help an awful lot of people!

Thank you,


HeadingPitchRoll is not interpolatable, which is required for use with sampled properties. Convert each of your samples to Quaternion using the Quaternion.fromHeadingPitchRoll function. Additionally, the orientation entity property requires a property of type Quaternion anyway.

Thanks, Scott.